Electric connector



To all' whom t may concern UNITED STATES y PATENT OFFICE."

FREDERICK A. TEFFT, rOFy TOLEDO, OHIO..

ELECTRIC CONNECTOR.

Be itknown that I, FREDERICK A. TEFFT,

' a citizen of the United States, and a resident of Toledo, in thecounty of Lucas and State of Ohio, have invented a certain new anduseful Electric Connector; and -I do hereby declare the following to'beaY full,

" clear, and exact description ofthe invention, such as will enableothers skilled (in.

the'art to which it appertains to make and use the same, reference beinghad to the 'l drawings, and to the characters of referencemarkedthereon,which form a part of this specification.

My invention has for its object'to provide va connector for connecting awire to vanother object. The said other object may be to another wire orit may be to some in strument 4or other part or thing to which it isdesired to make` a secure connection.

. The invention is particularly adapted and finds .its greatest.advantage in connecting I a wire' to another object for the purpose ofmaking a ,good electric connection which is somewhat of aI permanentcharacter and "yet which maybe made with ease and witha Aout the use ofexpensive or elaborate tools or method of. connection. The inventionthus provides a means for making a secure electrical contact connectionwithout the use ofsolder. Other features and advantages Yof theinvention will appear from the following description and uponexamination of the drawings.

The invention may tures of different forms. To illustratethepracticability of my invention I have se- Y lected two vor threeconstructions embodying the invention and shall describe themhereinafter., "illustrated in thek accompanying drawings.

- Figure 1l of the drawings illustrates al perspective view of one ofthe structures The structuresV selected are form of an instrumentconnector, and Fig. 7 illustrates a broken sectional view of the form ofstructure illustrated in Fig. 6.

In the form of the Vstructure illustrated be contained in struc-`Specication of Letters Patent. Patented June 2,8, 1921.1. Applicationmed January 24, 1920. serial No. 353,776.

that are to be connected together. They may be provided with' insulators3 ofV insulating material up to near the\ends of the wire. The ends ofthe wire are bared lin Figs. 1 and 2, 1 and 2 are. the wires andareinsertedthrough openings 4 formed in plugs 5 and 6. The plugs 5 and 6have channels 7 and the holes 4 preferably eX- tend from the centers ofthe outer endsof the plugs diagonally toward the ychannels 7 The baredends of the wires are inserted into the holes and the endsare bent so asto keep the main or body portions of the wires in axial alinement withthe plugs and in so doing continued step byv step inward movements andbending will cause the bared; v

ends of the wires to curve outward from the axis of the plugs. TheVplugs arelocated in a cylinder 8 and preferably meet about the centerof the cylinder. The cylinder isI provided with openings 9 and 10.

VTheopenings 4 are so placed that as the bared ends of the wires 1 and2'areinserted in the openings 4 and curved outward they will passthrough the openings 9 and 10 of the cylinder 8.

bring the insulation 3 against the outer ends of the plugs, the outerends of the plugs are gripped by suitablel means such as pliers, thecylinder 8V is rotated which will cause the ends of the wires to windupon the plugs 5 and 6 and in the channels-"7. If desired, the parts maybe rotated relative to each other so as to wind all of the bared endsofthe wire upon the plugs or a portion of the bared ends of the wiremayy be alowed to extend through vone or both of the openings 9 and 10of the cylinder so as to lock thecylindenwith respect to the plugs.VAlso, if desired, the bared ends of the wire may .be turnedback andinserted into the openings 9 or'l() so as to prevent any movementwhatsoever of the cylinder with, respect to the plugs. l The ,bendingAback of the endvinto the opening forms` a U-shape protruding loopwhichwill secure When the bared endsk have been inserted, preferably "so astoA or lock cylinder with respect to the plugs.-

The plugs 5, and 6 may be .provided with flanges 11 whose outer edgespreferably fit 4Vthe interior of the cylinder 8 `so that if` desired,`the plugs may be secured inthe cylinders by driving a pointed instrumentagainst the cylinder to form indentationsr12 that Vwill be located atthe side edges of the flanges ll and thus prevent the plugs 5 and 'efiom being Pulled ut 0f the. @y1- inder. i

Forpurposes of rotation the outerends" ofthe plugs and 6 are providedWith oblong heads 13v which provides al means whereby the plugs maybereadily engaged -with pliers or with a-Wrench to'cause rotafthe-heads13, flanges 14 Will be left WhichV l vvill cover` the ends of thecylinder. ders 15 mayalso be formed in the flanges 14 15l tion of thecylinder With respect to the plugs or rotation of the plugs With respectto ,thejgcylinden The outer ends vof `the -plugs may be so-,ormed thatlinforming that-Will operate as a'guide in the relative rotations of theplugs and the cylinder.

By this, arrangement' a perfect electric. contact, ismade Aand thecontact portlons.

are `vinclosed and protected.

In Figs. 3 and 4 is shown astructure wherein the Wires are connected toa single plug. -The plug 17 extends through the entire length of thecylinder 18. The ends i i l vof the plugs 17 Vare provided `with theopen-` wings 1 94 and 20. One end of the plug 17 has ,ia flange 21 thatcorresponds to the flanges 11 shown in Fig. 2 and closes the end of thea cylinder 18. The other end of the plug 17 is provided with, a suitablemeansfor per-V mittingia good grip ofthe plug17 such as by l-means ofpliers or a Wrench-This also may be an oblong head 22 of'aform similarto that shown inthe form illustrated in F igs.; x1 and 2. The cylinder18-.is provided' With openings 23through which the wires pass as theyare bent and turned in passing through the openings 19 and 2O andthrough fthechannels 24 of the plug 17. The cylinder Y l8'is thengripped'by a suitable means and rotated While the plug 19 is held inposition.

By this operation the ends ofthe Wires will be Wound yaround the plug.To lock the cylinder relative to the plug, the endsof the Wires may bebent back as is described in V.connection with the description of thevstructure illustrated in Figs.v 1 and 2. VIn

Figs. A3 and 4 is'illustrated another form of f connection whichvconsists in keying the cylinder `to the plug by means of the Wire25which may be inserted through openings l26, the plug 17 being providedWith a chanynel 27 through which the .Wire 25 passes tangential withrespect to the bottom of the channel 27. The ends .of the Wire 25 may beturned back to prevent the Withdrawal of v the wire', and thus tosecurely lock the plug 17 and thecylinder 18 together.

y In the form of theJ structure illustrated in* E Fig; 5, the baredendsy of the vvire are in- 'serted .through thimbles 29 that cover theend of the part 30 that corresponds to the .plug 17 ofthe form of thestructure illustrated in Fig. The plug 30 is provided di i/.withythechannels 31 and 32 and the openingsj33, whilethe thimbles 2 9 areprovided Shoulvtive, to the' cylinder.

vvith the openings 34-land35. The bared Vvends of the Wiresare insertedthrough the openings 35,y -33"**and 34, whereupon the thimbles .and theplug are rotated relative -`'toeaChbthe-r so as to Wind the ends of theWires Vin the channels 31 and 32. rIhe thimbles 29 may belocked by meanslof the ends V oi the Wire `as described in connection with the form'ofYstructure illustrated in Figs. 1 and 2. They also maybe connected :tothe plug 30 bymeansof turning down or spinning the edges 36of thethimbles into` the channels 37 formed in the plug 30.`

-For purposesk of rotation'ofV relative lto the thimbles29, the centralpor- -tion of the plug maybe larger than the diameter of the thimbles orthe plug 30 maybe provided With the Vopening 38 through VWhich maybeinserted an instrument, such as anaiL or aWl.

Figs. d and illustrate a connection that is made to a part ofaninstrument, that'is the said part may be formed at oneQend so as toconnect it Withvthe ordinary binding,

post or it may be made in such a shapeas to be used as one oftheterminals of aknife switch. The otherend of the connector is providedWithl the .plug V40 which. has the channel 41 andthe opening 42 leadingfrom the center of the end of the plug to the channel 41. The connectormember 43 at oneend has acylindrical part-44 in which the plug 40 islocated It has an opening 45 Vthat may be located on the lower side oftheconnector part 43 and when connection is to bev made the bared end ofthe Wireis inserted through the openings 42 and 45 and the plug. 40 isrotatedso as to Wind thewireon to theplug 40 and into the channel 41.Iclaim:-

1.` In an electric. connector,.a cylinder having an, opening, apluglocated in the cylinder and having a channelregistering with theopening in the cylinder, the' plug having an opening leading from theVouter end of the plug to the channeL'the said openings and ythe channeladapted to .receive the end of the Wire lto b e connected and thechannel adapted to receive turnsof Wire when the cylinder andthe plugyare rotatedrelativeto eachother. l

2.1In anrelectric conector, aplug having channels and openings extendinglfromthe ends of the -plu-g to the chan nels, a Vcylinder plugs tothechannels, the said openings for receiving ends of the wires to beconnected and the channels for receiving turns of the Wires to beconnected.

4. In an electric connector, a cylinder having a pair of openings, plugslocated in the cylinder and having a pair of channels registering withthe said openings and havlng openings extending from the ends of theplugs to the channels,the said openings for receiving ends of the wiresto be connected 10 and the channels for receiving turns of the Wires tobe connected, and means for interlocking the cylinder and the lug.

In testimony whereof I ave hereunto signed my neme to this s ecifcation.

FREDERI K A. TEFFT.

